<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4"><el-button type="primary" @click="goAddpage">添加商品</el-button></el-col>
            </el-row>

            <!-- table表格区域 -->
            <el-table :data="goodsList" border stripe>
                <!-- 索引列 -->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
                <el-table-column label="创建时间" width="140px" prop="add_time">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope" width="130px">
                        <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)">删除</el-button>
                    </template>
                </el-table-column>

                <!-- 分页区域 -->
                <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
                </el-pagination>
            </el-table>
        </el-card>
    </div>
</template>
<script>
export default {
    data(){
        return{
            queryInfo:{
                query:'',
                pagenum: 1,
                pagesize: 2
            },
            // 总数据条数
            total: 0,
            // 商品列表
            goodsList: []
        }
    },
    created() {
        // 根据分页获取对应的商品列表
        this.getGoodsList()
    },
    methods: {
        // 根据分页获取对应的商品列表
        async getGoodsList() {
            const { data:res } = await this.$http.get('goods', {
                params: this.queryInfo
            })
            if(res.meta.status !== 200){
                return this.$message.error('获取商品列表失败')
            }
            // 把列表数据赋值给goodsList
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById(id) {
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err => err)
            if (confirmResult !== 'confirm') {
                return this.$message.info('已经取消删除！')
            }

            const { data: res } = await this.$http.delete(`goods/${id}`)

            if (res.meta.status !== 200) {
                return this.$message.error('删除失败！')
            }

            this.$message.success('删除成功！')
            this.getGoodsList()
        },
        goAddpage() {
            this.$router.push('/goods/add')
        }
    }
}
</script>